This is the Apeks WTX-D Ultralight Plate Features: Fits APEKS WTX and WTX-D Harnesses Great Lightweight Travel Plate Pairs w/WTX-D18 Donut Wing Accepts SureLock Weight System Exterior Material: 420 D Nylon Coated with Black Urethane Interior Material: LDPE Plastic / EVA Foam Crotch Strap Loop: Plastic Perimeter Grommets: 6 Weight:12.2 oz. (345 g) The WTX and WTX-D Series is a selection of harnesses, buoyancy cells and accessories which offer unparalleled versatility due to the modular nature of the whole system. Each component can be configured into a highly technical rig for those trained to push the limits, or scaled down to make a travel friendly set up suitable for any diver. The Ultralight Travel Plate is for the diver who enjoys diving back plate and wings but doesn&';t want the weight that a traditional metal plate has. Paired with the WTX-D18 donut wing, it makes a very lightweight, streamlined piece of kit and can accept the SureLock Weight System when used with the SureLock attachment plates. Requires the Deluxe One-Piece Webbed Harness.